24 Geometry Wars: Retro Evolved 2
Geometry Wars made shoot-em-ups fun again when the Xbox 360 was first released, but its sequel has completely re-defined the genre. Six brilliant gameplay modes, a bevy of multiplayer options, and yes, they even made it look more eye-poppingly gorgeous than before. No, we didn't think it could be done, either. Everyday Shooter and Super Stardust HD are good, but Geometry Wars: Retro Evolved 2 is why you were born with opposable thumbs.